Understanding On-balance volume (OBV)

On-balance volume (OBV) is a technical analysis indicator which is designed to correlate price and volume in the stock market. OBV measures buying and selling pressure as a cumulative indicator that adds volume on up days and subtracts volume on down days. When the security closes higher than the previous close, all of the day’s volume is considered up-volume. When the security closes lower than the previous close, all of the day’s volume is considered down-volume.

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